Aegis is an authorization solution for Ruby on Rails that supports roles and a RESTish, resource-style declaration of permission rules.

Easy role authorization in rails

Role based authorization with CanCanCan for Active Admin

Simple, light and functional authorization library

Pundit authorization support for graphql

Support authentication via OAuth2 tokens dispensed from the Doorkeeper authorization flow

Simple role-based authorization for Rails applications with multi-tenancy support

Simple object-based role authorization in Rails

This gem provides a daemon that handles authorization and reporting of web services managed by 3scale.

Rails middleware that validates Authorization token emitted by Keycloak

The swiss army knife of instagram functionality. Restores all deprecated hashtag functionality from the instagram api without any of the authorization.

Rails authorization plugin

Moat is an small authorization library built for Ruby (primarily Rails) web applications

Authorization for Rails with Web Interface

Agnostic authorization component for Trailblazer.

Authorization framework

This is a basic Rails engine utilizing Authlogic, CanCan and Easy Roles to create a starting point for simple Rails-based applications that need authentication and authorization.

Solution that eliminates the tight coupling between user identity/authentication and application functional authorization

Flexible, configurable authorization system for ActiveRecord and an access control DSL for ActionController.

Permitters are an object-oriented way of defining what request parameters are permitted. using Strong Parameters. It is to Strong Parameters what ActiveModel::Serializers are to as_json/to_json, but supports CanCan and similar authorization frameworks.